error[E0308]: mismatched types
  --> $DIR/assert-macro-without-else.rs:4:5
   |
LL | fn f() -> bool {
   |           ---- expected `bool` because of this return type
LL |     assert!(1 < 2)
   |     ^^^^^^^^^^^^^^ expected `bool`, found `()`

error[E0308]: mismatched types
  --> $DIR/assert-macro-without-else.rs:9:5
   |
LL |     assert_eq!(1, 1)
   |     ^^^^^^^^^^^^^^^^ expected `i32`, found `()`

error[E0308]: mismatched types
  --> $DIR/assert-macro-without-else.rs:14:5
   |
LL |     assert_ne!(1, 2)
   |     ^^^^^^^^^^^^^^^^ expected `bool`, found `()`

error[E0308]: mismatched types
  --> $DIR/assert-macro-without-else.rs:26:9
   |
LL |         assert!(1 < 2)
   |         ^^^^^^^^^^^^^^ expected `bool`, found `()`
...
LL | fn nested() -> bool {
   |                ---- expected `bool` because of this return type
LL |     g!()
   |     ---- in this macro invocation
   |
   = note: this error originates in the macro `assert` which comes from the expansion of the macro `g` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0308`.